def build(self, opts = {}):
writer = IO_Bit()
self._buildChunk(writer, self.header, opts)
for track in self.tracks:
self._buildChunk(writer, track, opts)
if self.xfinfo:
self._buildChunk(writer, self.xfinfo, opts)
if self.xfkaraoke:
self._buildChunk(writer, self.xfkaraoke, opts)
return writer.output()
def _buildChunk(self, writer, chunk, opts):
type = chunk['type']
writerChunk = IO_Bit()
if type == 'MThd':
self._buildChunkHeader(writerChunk, chunk['header'], opts)
elif type == 'MTrk':
self._buildChunkTrack(writerChunk, chunk['track'], opts)
elif type == 'XFIH':
self._buildChunkXFInfo(writerChunk, chunk['xfinfo'], opts)
elif type == 'XFKM':
self._buildChunkXFKaraoke(writerChunk, chunk['xfkaraoke'], opts)
else:
raise Exception("Unknown chunk (type=type)\n")
chunkData = writerChunk.output()
length = len(chunkData)
writer.putData(type , 4)
writer.putUI32BE(length)
writer.putData(chunkData, length)
